Week 4 - Lecture Assemblies. ME Introduction to CAD/CAE Tools

Transcription

1 Week 4 - Lecture Assemblies

2 Lecture Topics Assemblies and Product Structure Bill of Materials PLM Role and Definition Design for Assembly Overview Case Study Examples

3 Product Lifecycle Week 4 Requirements Management Portfolio Management Conceptual Design Product Engineering Manufacturing Engineering Simulation & Validation Build & Produce Disposal & Recycling Maintenance & Repair Sales & Distribution Test & Quality

4 What is an Assembly Digital prototype of actual product consisting of parts and sub-assemblies.

5 Terms Bill of Material (BOM) Master list of items and their quantities to assemble a product Engineering Bill of Material (EBOM) Reflects the product as it is designed by engineering Manufacturing Bill of Material (MBOM) Focuses on the items needed to manufacture a product Product Structure The hierarchical structure of a product

6 Difference Between EBOM and MBOM EBOM MBOM

7 Product Architecture Determining your product architecture and structure is critical for product configuration and concurrent engineering.

8 Bill of Material (BOM) Packaging Option 1 Packaging Option 2 Power US Power German Assembly Assembly Part Part Part Part Assembly Part Part Assembly Part Part Part Part Part Assembly Part Part Part

9 Product Structure Assembly Attribute Values Part Name Part Number Manufacturer Number Assembly Part Part Assembly Data Set Files 3D Models Drawings Requirements Viewable File Part Part Part Assembly Part Part Part Part Related Data Manufacturing Data Tooling Data Costing Data Change Orders File versions for each type of file related.

10 Concurrent Engineering Concurrent engineering is the approach to having multiple people or groups working together at the same time on a product. Time

11 Notes on Concurrent Engineering In all cases only one person can work on a part or assembly at the same time. This impacts concurrent design. This is also true for design responsibility.

12 Assembly Structure Tips Establish the sub-assemblies and parts just like you would assemble the real product. To ensure the most optimal reuse, group items into logical sets for standardization.

13 Assembly Creation Methods Bottom-Up Top-Down

14 Bill of Materials Example Product Item Qty. Part # Description Motor Assembly Stop Block Item Qty. Part # Description Shaft Bearing Case

15 Product Lifecycle Management Product Lifecycle Management (PLM) PLM is a business approach to solving the problem of managing product definition information. PLM is not a definition of technology. Source: CIMdata

16 PLM Definition A strategic business approach that applies a consistent set of business solutions that support the collaborative creation, management, dissemination, and use of product definition information. Supporting the extended enterprise (customers, design and supply partners, etc.) Spanning from concept to end of life of a product. Integrating people, processes, business systems, and information. Source: CIMdata PLM Think tank

17 PLM Primary Functions Data Vault & Document Management Data Authoring (CAx) Workflow & Process Management Classification Management Structure Management Program & Project Management Source: CIMdata

18 PLM Summary PLM manages the complex and complete product definition.

19 Product Data Management Product Data Management (PDM) is the system that is used for the managing and tracking of product design data primarily focused around engineering. Product Data Management (PDM) is often one element of an overall PLM strategy.

20 ERP Role The PLM system most commonly integrates with the ERP business system. The ERP manages the physical item information of a product. The Bill of Material information is most commonly linked between PLM and ERP. Source: WhatIsERP.net

21 Design for Assembly (DFA) Design for Assembly (DFA) is the proactive approach to designing a product for ease of assembly to reduce cost and time.

22 Design for Assembly Example 3 Parts 3 Parts 2 Parts 2 Parts Requires a screwdriver Requires a rivet gun Integrated Fastener Integrated Fastener Needs careful alignment Time Consuming Alignment not as delicate Assembly Time Less Requires machine to secure the head of the fastener Can be hand pressed into place and removed

23 Computer-Cluster Projects (CP3)

24 Cluster Project 1 Guides instructions for learning general assembly constraints.

25 Cluster Project 2 Guided instructions for assembly visualization and manipulation.

26 Cluster Project 3 Guided instructions for designing in the assembly context (Top Down).

27 Problem Set Assignment Problem set assignment for assembling the lower seat frame assembly.

28 Assemblies Demo Topics

29 About Project Files Assemblies reference parts Drawings reference parts. Drawings reference assemblies. Drawings reference presentations. Presentations reference assemblies

30 Project File Configuration Projects Dialog Box Used to create, edit, or set a project current. Top pane shows the available projects, and the lower pane shows the settings and configured options for the selected project.

31 Assembly Constraints Mate/Flush Constraint The Mate/Flush constraint is used to align part features such as faces, edges, or axis. Before Mate Constraint After Mate Constraint Before Flush Constraint After Flush Constraint

32 Assembly Constraints Angle Constraint Used to specify an angle between two parts. The angle constraint is applied to faces, edges, or axes. Before Angle Constraint After Angle Constraint

33 Assembly Constraints Tangent Constraint Used to define a tangential relationship between two parts. The tangent constraint is generally applied to circular faces and planar faces. One of the selected faces must be circular. Before Tangent Constraint After Tangent Constraint

34 Assembly Constraints Insert Constraint This constraint is used to insert one component into another. This constraint effectively combines a mate axis/axis and a mate face/face constraint. Generally the insert constraint is applied to bolts, or pins, or any part that needs to be inserted into a hole on another part. It is applied by selecting a circular edge on each part. Before Insert Constraint After Insert Constraint

35 Isolating Components Isolate Isolate: Overflow Menu: Right-click a selected component > Isolate Undo Isolate Undo Isolate: Overflow Menu: Right-click in the browser or graphics window > Undo Isolate.

36 Find in Browser Find In Browser Overflow Menu: Right-click a selected component in the graphics window.

37 Zoom Selected Find in Window, Zoom Selected Ribbon: View tab > Navigate panel Keyboard: END Overflow Menu: Right-click a selected component in the browser.

38 Selecting Components Selection Filters Quick Access Toolbar: Component Priority Flyout > Select Keyboard: SHIFT+right-click

39 Sections Assembly Sections Ribbon: View tab > Appearance panel Half-section view: Quarter-section view: Three-quarter section view:

40 Designing components in-place Create Components in Context Design each component while still in the assembly environment. As you design each component, you are applying the required assembly constraints, and are making changes to parts based upon their relationships to other components in the assembly.

41 Checking for Interferences Interference Ribbon: Inspect tab > Interference panel > Analyze Interference

42 Driving Constraints for Simple Motion and Analysis Drive Constraint RMB on the constraint in the browser > Drive Constraint

43 Placing Standard Components Using the Content Center Content Center Ribbon: Assemble tab > Component panel > Place from Content Center